drm/radeon: start to document the functions r100.c (48ef779f) · Commits · e / devices / android_kernel_teracube_2e

drivers/gpu/drm/radeon/r100.c

+124 −3

Original line number	Diff line number	Diff line
		@@ -65,6 +65,19 @@ MODULE_FIRMWARE(FIRMWARE_R520);

		#include "r100_track.h"

		/* This files gather functions specifics to:
		* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280
		* and others in some cases.
		*/

		/**
		* r100_wait_for_vblank - vblank wait asic callback.
		*
		* @rdev: radeon_device pointer
		* @crtc: crtc to wait for vblank on
		*
		* Wait for vblank on the requested crtc (r1xx-r4xx).
		*/
		void r100_wait_for_vblank(struct radeon_device *rdev, int crtc)
		{
		struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc];
		@@ -99,22 +112,49 @@ void r100_wait_for_vblank(struct radeon_device *rdev, int crtc)
		}
		}

		/* This files gather functions specifics to:
		* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280
		/**
		* r100_pre_page_flip - pre-pageflip callback.
		*
		* @rdev: radeon_device pointer
		* @crtc: crtc to prepare for pageflip on
		*
		* Pre-pageflip callback (r1xx-r4xx).
		* Enables the pageflip irq (vblank irq).
		*/

		void r100_pre_page_flip(struct radeon_device *rdev, int crtc)
		{
		/* enable the pflip int */
		radeon_irq_kms_pflip_irq_get(rdev, crtc);
		}

		/**
		* r100_post_page_flip - pos-pageflip callback.
		*
		* @rdev: radeon_device pointer
		* @crtc: crtc to cleanup pageflip on
		*
		* Post-pageflip callback (r1xx-r4xx).
		* Disables the pageflip irq (vblank irq).
		*/
		void r100_post_page_flip(struct radeon_device *rdev, int crtc)
		{
		/* disable the pflip int */
		radeon_irq_kms_pflip_irq_put(rdev, crtc);
		}

		/**
		* r100_page_flip - pageflip callback.
		*
		* @rdev: radeon_device pointer
		* @crtc_id: crtc to cleanup pageflip on
		* @crtc_base: new address of the crtc (GPU MC address)
		*
		* Does the actual pageflip (r1xx-r4xx).
		* During vblank we take the crtc lock and wait for the update_pending
		* bit to go high, when it does, we release the lock, and allow the
		* double buffered update to take place.
		* Returns the current update pending status.
		*/
		u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
		{
		struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
		@@ -141,6 +181,15 @@ u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
		return RREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET;
		}

		/**
		* r100_pm_get_dynpm_state - look up dynpm power state callback.
		*
		* @rdev: radeon_device pointer
		*
		* Look up the optimal power state based on the
		* current state of the GPU (r1xx-r5xx).
		* Used for dynpm only.
		*/
		void r100_pm_get_dynpm_state(struct radeon_device *rdev)
		{
		int i;
		@@ -223,6 +272,15 @@ void r100_pm_get_dynpm_state(struct radeon_device *rdev)
		pcie_lanes);
		}

		/**
		* r100_pm_init_profile - Initialize power profiles callback.
		*
		* @rdev: radeon_device pointer
		*
		* Initialize the power states used in profile mode
		* (r1xx-r3xx).
		* Used for profile mode only.
		*/
		void r100_pm_init_profile(struct radeon_device *rdev)
		{
		/* default */
		@@ -262,6 +320,14 @@ void r100_pm_init_profile(struct radeon_device *rdev)
		rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx = 0;
		}

		/**
		* r100_pm_misc - set additional pm hw parameters callback.
		*
		* @rdev: radeon_device pointer
		*
		* Set non-clock parameters associated with a power state
		* (voltage, pcie lanes, etc.) (r1xx-r4xx).
		*/
		void r100_pm_misc(struct radeon_device *rdev)
		{
		int requested_index = rdev->pm.requested_power_state_index;
		@@ -353,6 +419,13 @@ void r100_pm_misc(struct radeon_device *rdev)
		}
		}

		/**
		* r100_pm_prepare - pre-power state change callback.
		*
		* @rdev: radeon_device pointer
		*
		* Prepare for a power state change (r1xx-r4xx).
		*/
		void r100_pm_prepare(struct radeon_device *rdev)
		{
		struct drm_device *ddev = rdev->ddev;
		@@ -377,6 +450,13 @@ void r100_pm_prepare(struct radeon_device *rdev)
		}
		}

		/**
		* r100_pm_finish - post-power state change callback.
		*
		* @rdev: radeon_device pointer
		*
		* Clean up after a power state change (r1xx-r4xx).
		*/
		void r100_pm_finish(struct radeon_device *rdev)
		{
		struct drm_device *ddev = rdev->ddev;
		@@ -401,6 +481,14 @@ void r100_pm_finish(struct radeon_device *rdev)
		}
		}

		/**
		* r100_gui_idle - gui idle callback.
		*
		* @rdev: radeon_device pointer
		*
		* Check of the GUI (2D/3D engines) are idle (r1xx-r5xx).
		* Returns true if idle, false if not.
		*/
		bool r100_gui_idle(struct radeon_device *rdev)
		{
		if (RREG32(RADEON_RBBM_STATUS) & RADEON_RBBM_ACTIVE)
		@@ -410,6 +498,15 @@ bool r100_gui_idle(struct radeon_device *rdev)
		}

		/* hpd for digital panel detect/disconnect */
		/**
		* r100_hpd_sense - hpd sense callback.
		*
		* @rdev: radeon_device pointer
		* @hpd: hpd (hotplug detect) pin
		*
		* Checks if a digital monitor is connected (r1xx-r4xx).
		* Returns true if connected, false if not connected.
		*/
		bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
		{
		bool connected = false;
		@@ -429,6 +526,14 @@ bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
		return connected;
		}

		/**
		* r100_hpd_set_polarity - hpd set polarity callback.
		*
		* @rdev: radeon_device pointer
		* @hpd: hpd (hotplug detect) pin
		*
		* Set the polarity of the hpd pin (r1xx-r4xx).
		*/
		void r100_hpd_set_polarity(struct radeon_device *rdev,
		enum radeon_hpd_id hpd)
		{
		@@ -457,6 +562,14 @@ void r100_hpd_set_polarity(struct radeon_device *rdev,
		}
		}

		/**
		* r100_hpd_init - hpd setup callback.
		*
		* @rdev: radeon_device pointer
		*
		* Setup the hpd pins used by the card (r1xx-r4xx).
		* Set the polarity, and enable the hpd interrupts.
		*/
		void r100_hpd_init(struct radeon_device *rdev)
		{
		struct drm_device *dev = rdev->ddev;
		@@ -471,6 +584,14 @@ void r100_hpd_init(struct radeon_device *rdev)
		radeon_irq_kms_enable_hpd(rdev, enable);
		}

		/**
		* r100_hpd_fini - hpd tear down callback.
		*
		* @rdev: radeon_device pointer
		*
		* Tear down the hpd pins used by the card (r1xx-r4xx).
		* Disable the hpd interrupts.
		*/
		void r100_hpd_fini(struct radeon_device *rdev)
		{
		struct drm_device *dev = rdev->ddev;